Android 16's concurrent mark-compact GC crashes when flipping
thread roots on our MAX_PRIORITY audio threads during JNI calls
(AudioRecord.read / AudioTrack.write). Not our code — all crash
frames are in libart.so.
Proposed fixes:
- Short term: DirectByteBuffer to reduce JNI transitions
- Long term: Oboe native audio from Rust (no JNI, no GC)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
